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Ruedi Frey
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Bassersdorf, CH
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Patents Grants
last 30 patents
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Patent Grant
Regeneration of nt-scr catalysts
Patent number
7,595,033
Issue date
Sep 29, 2009
Von Roll Umwelttechnik AG
Ruedi Frey
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Process and apparatus for the 3-stage treatment of solid residues f...
Patent number
5,925,165
Issue date
Jul 20, 1999
Von Roll Umwelttechnik AG
Karl Heinz Pflugl
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process for the treatment of solid residue from refuse incineration...
Patent number
5,765,489
Issue date
Jun 16, 1998
Von Roll Umwelttechnik AG
Ernst Hugentobler
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
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Patent Grant
Process and installation for the recovery of ammonia during the sep...
Patent number
5,069,886
Issue date
Dec 3, 1991
Ruedi Frey
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
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Patent Application
Regeneration of nt-scr catalysts
Publication number
20080089822
Publication date
Apr 17, 2008
Ruedi Frey
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES